Borderlands 2 hits store shelves on September 18. That gives you eight days to build the perfect Assassin, Gunzerker, Commando or Siren in the official Skill Tree Calculator.

The 50 skill points one can gain in Borderlands 2 won't be enough to fill the entire skill tree — it'll get you one whole branch and change — so you've got some serious decision-making to do before next week's release. I've been trying to build the perfect Siren for about an hour now, and I'm still not sure I'm maximizing my mayhem-causing potential.

Of course, once we're actually in game the choices we make today might wind up being worthless, but it's something to keep us occupied until next Tuesday. I'll take it.